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4 FeS + 7 O2 = 2 Fe2O3 + 4 SO2
Be(OH)2 + H2SO4 = BeSO4 + H2O =>
Be(OH)2 + H2SO4 = BeSO4 + 2 H2O
Ba(CH3COO)2 + HNO3 = Ba(NO3)2 + CH3COOH =>
Ba(CH3COO)2 + 2 HNO3 = Ba(NO3)2 + 2 CH3COOH
Sn(s) + HNO3(aq) = SnO2(s) + NO2(g) + H2O(l) =>
Sn(s) + 4 HNO3(aq) = SnO2(s) + 4 NO2(g) + 2 H2O(l)
CuO2 + H2 = Cu(OH)2 =>
CuO2 + H2 = Cu(OH)2
CuCl2 + H4SiO4 = HCl + Cu4(SiO4)2 =>
4 CuCl2 + 2 H4SiO4 = 8 HCl + Cu4(SiO4)2
NH4SO4 + NaOH = NH3 + NaSO4 + H2O =>
NH4SO4 + NaOH = NH3 + NaSO4 + H2O
CuO2 + H2 = Cu(OH)2 =>
CuO2 + H2 = Cu(OH)2
Al + AgNO3 = AlNO3 + Ag =>
Al + AgNO3 = AlNO3 + Ag
K2O + H2O = KOH =>
K2O + H2O = 2 KOH
MnCl2 + (NH4)2CO3 = MnCO3 + NH4Cl =>
MnCl2 + (NH4)2CO3 = MnCO3 + 2 NH4Cl
Mn(OH)2 + O2 = MnO(OH) + H2O =>
4 Mn(OH)2 + O2 = 4 MnO(OH) + 2 H2O
BaHPO4 + H3PO4 = Ba(H2PO4)2 =>
BaHPO4 + H3PO4 = Ba(H2PO4)2
SO2 + KMnO4 + H2O = MnSO4 + K2SO4 + H2SO4 =>
5 SO2 + 2 KMnO4 + 2 H2O = 2 MnSO4 + K2SO4 + 2 H2SO4
KClO + KI + HCl = I2 + KCl + H2O =>
KClO + 2 KI + 2 HCl = I2 + 3 KCl + H2O
Zn(NO3)2 + HCl = ZnH + Cl(NO3)2 =>
Zn(NO3)2 + HCl = ZnH + Cl(NO3)2
Co(NO3)3(aq) + (NH4)2S(aq) = Co2S3(s) + NH4NO3(aq) =>
2 Co(NO3)3(aq) + 3(NH4)2S(aq) = Co2S3(s) + 6 NH4NO3(aq)
MnO2 + H2SO4 = MnSO4 + O2 + H2O =>
2 MnO2 + 2 H2SO4 = 2 MnSO4 + O2 + 2 H2O
Ca2 + N2 = Ca3N2 =>
3 Ca2 + 2 N2 = 2 Ca3N2
Al + CuBr2 = AlBr2 + Cu =>
Al + CuBr2 = AlBr2 + Cu
N2 + O2 = N2O5 =>
2 N2 + 5 O2 = 2 N2O5
Cr2O7 + OH = H2O + CrO4 =>
Cr2O7 + 2 OH = H2O + 2 CrO4
Fe2(SO4)3 + KOH = Fe(OH)3 + K2SO4 =>
Fe2(SO4)3 + 6 KOH = 2 Fe(OH)3 + 3 K2SO4
SO2 + O2 = SO3 =>
2 SO2 + O2 = 2 SO3
Mg + O2 = MgO =>
2 Mg + O2 = 2 MgO
Al3 + CuBr2 = Cu + AlBr3 =>
2 Al3 + 9 CuBr2 = 9 Cu + 6 AlBr3
NaOH + H2CO3 = Na2CO3 + H2O =>
2 NaOH + H2CO3 = Na2CO3 + 2 H2O
HC2H3O2(aq) + K2CO3(aq) = H2O(l) + CO2(g) + KC2H3O2(aq) =>
2 HC2H3O2(aq) + K2CO3(aq) = H2O(l) + CO2(g) + 2 KC2H3O2(aq)
H2C2O4 + NaOH = Na2C2O4 + H2O =>
H2C2O4 + 2 NaOH = Na2C2O4 + 2 H2O
Na2O + Cl2O = NaCl + O2 =>
Na2O + Cl2O = 2 NaCl + O2
Na(OH)2 + (NH4)2SO4 = NaSO4 + H2O + NH3 =>
Na(OH)2 + (NH4)2SO4 = NaSO4 + 2 H2O + 2 NH3
H2SO4 + Al = Al2(SO4)3 + SO2 + H2O =>
6 H2SO4 + 2 Al = Al2(SO4)3 + 3 SO2 + 6 H2O
FeBr3 + KOH = Fe(OH)3 + KBr =>
FeBr3 + 3 KOH = Fe(OH)3 + 3 KBr
KOH + HBr = KBr + H2O =>
KOH + HBr = KBr + H2O
C + HNO3 = CO2 + NO + H2O =>
3 C + 4 HNO3 = 3 CO2 + 4 NO + 2 H2O
ClCH2CONHC6H3(CH3)2 + (C2H5)2NH = C14H22N2O + (C2H5)2NH2 + Cl =>
ClCH2CONHC6H3(CH3)2 + 2(C2H5)2NH = C14H22N2O + (C2H5)2NH2 + Cl
H2 + O2 = H2O =>
2 H2 + O2 = 2 H2O
Ca + H2SO4 = CaSO4 + H2 =>
Ca + H2SO4 = CaSO4 + H2
CH3OH + O2 = CO2 + H2O =>
2 CH3OH + 3 O2 = 2 CO2 + 4 H2O
Ca2 + O2 = CaO =>
Ca2 + O2 = 2 CaO
KMnO4 + NaOH + Na2SO3 = K2MnO4 + Na2MnO4 + Na2SO4 + H2O =>
2 KMnO4 + 2 NaOH + Na2SO3 = K2MnO4 + Na2MnO4 + Na2SO4 + H2O
Na + O2 = Na2O =>
4 Na + O2 = 2 Na2O
H2SO4 + Ba(OH)2 = BaSO4 + H2O =>
H2SO4 + Ba(OH)2 = BaSO4 + 2 H2O
NaOH + (NH4)2SO4 = Na2SO4 + H2O + NH3 =>
2 NaOH + (NH4)2SO4 = Na2SO4 + 2 H2O + 2 NH3
Al + Cr2O3 = Al2O3 + Cr =>
2 Al + Cr2O3 = Al2O3 + 2 Cr
Al + S8 = Al2S3 =>
16 Al + 3 S8 = 8 Al2S3
Cs + N2 = Cs3N =>
6 Cs + N2 = 2 Cs3N
Ca2 + N2 = Ca3N2 =>
3 Ca2 + 2 N2 = 2 Ca3N2
KMnO4 + CO + H2SO4 = CO2 + K2SO4 + MnSO4 + H2O =>
2 KMnO4 + 5 CO + 3 H2SO4 = 5 CO2 + K2SO4 + 2 MnSO4 + 3 H2O
CuO + HNO3 = CuNO3 + HO =>
CuO + HNO3 = CuNO3 + HO
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